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This article is cited in 7 scientific papers (total in 7 papers)
Semiconductor structures, low-dimensional systems, quantum phenomena
Influence of hydrogen on the electrical properties of Pd/InP structures
V. A. Shutaeva, V. G. Sidorovb, E. A. Grebenshchikovaa, L. K. Vlasova, A. A. Pivovarovaa, Yu. P. Yakovleva a Ioffe Institute, St. Petersburg
b IBSG Co., Ltd., St.Petersburg
Abstract:
The influence of hydrogen on the electrical properties of Pd/$n$-InP and Pd/oxide/$n$-InP structures is studied. It is found that a variation in the cutoff voltage $\Delta U_{\operatorname{cut-off}}$ in the current–voltage characteristics of the structures under study upon exposure to hydrogen with concentrations of 0–1 vol % in a nitrogen–hydrogen mixture is described by the exponential dependence: $\Delta U_{\operatorname{cut-off}}=a[1-\operatorname{exp}[-b\cdot N_{\mathrm{H}}$], where $N_{\mathrm{H}}$ is the hydrogen concentration (vol %), and $a$ and $b$ are constants dependent on the type of structures. It is shown that a decisive influence on how the potential-barrier height changes in the Pd/InP and Pd/oxide/InP structures in the presence of H$_2$ in a gas medium is exerted by a change in the Pd work function in an atmosphere of hydrogen. It is found that, in the structures under study, tunneling and thermal-tunneling charge-transport mechanisms operate at 90–300 K in the presence of hydrogen and without it. With increasing hydrogen concentration in the gas mixture, the predominance of the tunneling charge-transport mechanism becomes more pronounced.
Keywords:
palladium, InP, hydrogen, work function, conduction mechanism.
Received: 06.05.2019 Revised: 13.05.2019 Accepted: 13.05.2019
Citation:
V. A. Shutaev, V. G. Sidorov, E. A. Grebenshchikova, L. K. Vlasov, A. A. Pivovarova, Yu. P. Yakovlev, “Influence of hydrogen on the electrical properties of Pd/InP structures”, Fizika i Tekhnika Poluprovodnikov, 53:10 (2019), 1427–1430; Semiconductors, 53:10 (2019), 1389–1392
Linking options:
https://www.mathnet.ru/eng/phts5391 https://www.mathnet.ru/eng/phts/v53/i10/p1427
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